Pi Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(regular)
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This multi-stage "super-geek" puzzle may have you running in circles for a while. Just don't waste your time going to the "circle" at the location listed above, the cache isn't hidden there!
"Pi is a mathematical constant whose value is the ratio of any circle's circumference to its diameter in Euclidean space; this is the same value as the ratio of a circle's area to the square of its radius."
Source:
Wikipedia.
Is this pi to 2,500 decimal places?
3.141592653589793238462643383279502884197169399
37510582097494459230781640628620899862803482534
21170679821480865132823066470938446095505822312
75359408124881117450248102701938521105559644622
94895493038196442881097566593344612847564823378
67831652712019091456485669234603486104543266482
13393607260249141273724587006606315588174881520
92096282925409171536436789259036001133053054882
04665213841469519415116094330572703657595919530
92186117381932611793105118540874462379962749567
35188575272489122793818301194912983367336244065
66430860213949463952247371907021798609437027705
39217176293176752384674818467669405132000568127
14526356082778577134275778960917363717872146844
09012249534301465498553710507922796892589235420
19956112129021960864034418159813629777471309960
51870721134999999837297804995105973173281609631
85950244594553469083026425223082533446850352619
31188171010003137838752886587533208381420617177
66917430359825349042785546783115956286388235377
85937519577818577805321712268066130019278766111
95909216420198938095257201065485863278865936153
38182796823030195203530185296899577362259941389
12497217752834791315155748572424541506959508295
33116861727855889075098381756437464939319255060
40092770167113900984882401285836160356370766010
47101819429555961989467678374494482553797742768
47104047534646208046684259069491293313677028989
15210475216205696602405803815019351125338243003
55876402474964732639141992726042699229767823547
81636009341721641219924586315030286182974555706
74983850549458858692699569092721079750930295532
11653449872027559602364806654991198818347977535
66369807426542527862551814817574672890977772793
08008164706001614524919213721721477235014144197
35685481613611573525521334757418496484385233239
03794143334547762416862518983569485562099219222
18427255025425688767179049460165346680498862723
27918760857843838279679766814541009538837863609
50680064225125205117392984896084128488626945604
24196528502221066118630674427862203919494504712
37137869609563643719172874677646575739624138908
65832645995813390478027590099465764078951269468
39835259507982582262052248940772671947826848260
14769909026401363944374553050682034962524517493
99651431429809190659250937221696461515709858387
41059788595977297549893016175392846813826868386
89427741559918559252459539594310499725246808459
87273644695848653836736222626099124608051243884
39045124413654976278097771569143599770012961608
94416948685558484063534220722258284886481584560
28506016842739452267467678895252138522549954666
72782398645659611635488623057745649803559363456
81743241125
The final location is within 5km of the listed coordinates, where you'll find a camouflaged Sistema container - a round one, of course! But before then you'll have to solve a few puzzles, and possibly draw a few circles, too. Good luck!
Additional Hints
(Decrypt)
[Puzzle:] NFN K3.4-1963
[Cache:] Jura ng TM, jvguva ebbgf ng onfr bs zbfg AR gerr, haqre n cvyr bs ebpxf